| commit | author | age | ||
| e0a3ca | 1 | |
| SP | 2 | /** NimBLE_Server Demo: |
| 3 | * | |
| 4 | * Demonstrates many of the available features of the NimBLE server library. | |
| 5 | * | |
| 6 | * Created: on March 22 2020 | |
| 7 | * Author: H2zero | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | #include <NimBLEDevice.h> | |
| 12 | ||
| 13 | static NimBLEServer* pServer; | |
| 14 | NimBLECharacteristic* pBeefCharacteristic; | |
| 15 | int counter; | |
| 16 | ||
| 17 | /** Handler class for characteristic actions */ | |
| 18 | class CharacteristicCallbacks: public NimBLECharacteristicCallbacks { | |
| 19 | void onRead(NimBLECharacteristic* pCharacteristic){ | |
| 20 | counter++; | |
| 21 | pCharacteristic->setValue(counter); | |
| 22 | Serial.print(pCharacteristic->getUUID().toString().c_str()); | |
| 23 | Serial.print(": onRead(), value: "); | |
| 24 | Serial.println(pCharacteristic->getValue().c_str()); | |
| 25 | ||
| 26 | }; | |
| 27 | ||
| 28 | ||
| 29 | }; | |
| 30 | ||
| 31 | ||
| 32 | static CharacteristicCallbacks chrCallbacks; | |
| 33 | ||
| 34 | ||
| 35 | void setup() { | |
| 36 | Serial.begin(115200); | |
| 37 | Serial.println("Starting NimBLE Server"); | |
| 38 | counter = 0; | |
| 39 | /** sets device name */ | |
| 40 | NimBLEDevice::init("Acell_Miha_1"); | |
| 41 | ||
| 42 | /** Optional: set the transmit power, default is 3db */ | |
| 43 | //NimBLEDevice::setPower(ESP_PWR_LVL_P9); /** +9db */ | |
| 44 | ||
| 45 | /** Set the IO capabilities of the device, each option will trigger a different pairing method. | |
| 46 | * BLE_HS_IO_DISPLAY_ONLY - Passkey pairing | |
| 47 | * BLE_HS_IO_DISPLAY_YESNO - Numeric comparison pairing | |
| 48 | * BLE_HS_IO_NO_INPUT_OUTPUT - DEFAULT setting - just works pairing | |
| 49 | */ | |
| 50 | //NimBLEDevice::setSecurityIOCap(BLE_HS_IO_DISPLAY_ONLY); // use passkey | |
| 51 | //NimBLEDevice::setSecurityIOCap(BLE_HS_IO_DISPLAY_YESNO); //use numeric comparison | |
| 52 | ||
| 53 | /** 2 different ways to set security - both calls achieve the same result. | |
| 54 | * no bonding, no man in the middle protection, secure connections. | |
| 55 | * | |
| 56 | * These are the default values, only shown here for demonstration. | |
| 57 | */ | |
| 58 | //NimBLEDevice::setSecurityAuth(false, false, true); | |
| 59 | NimBLEDevice::setSecurityAuth(/*BLE_SM_PAIR_AUTHREQ_BOND | BLE_SM_PAIR_AUTHREQ_MITM |*/ BLE_SM_PAIR_AUTHREQ_SC); | |
| 60 | ||
| 61 | pServer = NimBLEDevice::createServer(); | |
| 62 | // pServer->setCallbacks(new ServerCallbacks()); | |
| 63 | ||
| 64 | NimBLEService* pDeadService = pServer->createService("DEAD"); | |
| 65 | pBeefCharacteristic = pDeadService->createCharacteristic( | |
| 66 | "BEEF", | |
| 67 | NIMBLE_PROPERTY::READ | | |
| 68 | //NIMBLE_PROPERTY::WRITE | | |
| 69 | /** Require a secure connection for read and write access */ | |
| 70 | NIMBLE_PROPERTY::READ_ENC // only allow reading if paired / encrypted | |
| 71 | //NIMBLE_PROPERTY::WRITE_ENC // only allow writing if paired / encrypted | |
| 72 | ); | |
| 73 | ||
| 74 | pBeefCharacteristic->setValue(counter); | |
| 75 | pBeefCharacteristic->setCallbacks(&chrCallbacks); | |
| 76 | ||
| 77 | /** 2904 descriptors are a special case, when createDescriptor is called with | |
| 78 | * 0x2904 a NimBLE2904 class is created with the correct properties and sizes. | |
| 79 | * However we must cast the returned reference to the correct type as the method | |
| 80 | * only returns a pointer to the base NimBLEDescriptor class. | |
| 81 | */ | |
| 82 | // NimBLE2904* pBeef2904 = (NimBLE2904*)pBeefCharacteristic->createDescriptor("2904"); | |
| 83 | // pBeef2904->setFormat(NimBLE2904::FORMAT_UTF8); | |
| 84 | ||
| 85 | /** Note a 0x2902 descriptor MUST NOT be created as NimBLE will create one automatically | |
| 86 | * if notification or indication properties are assigned to a characteristic. | |
| 87 | */ | |
| 88 | ||
| 89 | /** Custom descriptor: Arguments are UUID, Properties, max length in bytes of the value */ | |
| 90 | NimBLEDescriptor* pBeef2904 = pBeefCharacteristic->createDescriptor( | |
| 91 | "C01D", | |
| 92 | NIMBLE_PROPERTY::READ | | |
| 93 | NIMBLE_PROPERTY::WRITE| | |
| 94 | NIMBLE_PROPERTY::WRITE_ENC, // only allow writing if paired / encrypted | |
| 95 | 20 | |
| 96 | ); | |
| 97 | ||
| 98 | /** Start the services when finished creating all Characteristics and Descriptors */ | |
| 99 | pDeadService->start(); | |
| 100 | ||
| 101 | ||
| 102 | NimBLEAdvertising* pAdvertising = NimBLEDevice::getAdvertising(); | |
| 103 | /** Add the services to the advertisment data **/ | |
| 104 | pAdvertising->addServiceUUID(pDeadService->getUUID()); | |
| 105 | ||
| 106 | /** If your device is battery powered you may consider setting scan response | |
| 107 | * to false as it will extend battery life at the expense of less data sent. | |
| 108 | */ | |
| 109 | pAdvertising->setScanResponse(true); | |
| 110 | pAdvertising->start(); | |
| 111 | ||
| 112 | Serial.println("Advertising Started"); | |
| 113 | } | |
| 114 | ||
| 115 | ||
| 116 | void loop() { | |
| 117 | } | |
